PostCSS plugin that strips selectors found in other stylesheets.

npm install -D uniquestyles

This plugin is primarily intended to be used inside Laravel Nova to strip out Tailwind selectors in your custom field/card/tool css file that are already defined in the Nova stylesheet. This ensures that your custom css file is as small as possible and doesn't cause style conflicts with Nova.

You should configure this plugin by passing CSS files you want to compare against to the paths option:

// postcss.config.js
const path = require("path");

module.exports = {
  plugins: {
    tailwindcss: {},
    autoprefixer: {},
    uniquestyles: {
      paths: [
          path.join(__dirname, "../../public/vendor/nova/app.css"),
      ]
    },
  }
}

This plugin was created for the Laravel Nova Mastery 2023 course and is pretty much verbatim from work done by Aaron Francis. All credit goes to him for the idea and implementation.